I apologize for taking a long ass time to get back to this. I had a few things blow up on me. I'm going to reflash the camera but I pulled the crash log and thought it might have some value.
When recording video the camera would crash with
ASSERT: FALSE
at SoundDevice\SoundDevice_CODEC.c:1080, task ASIF
lv:1 mode:20
ASIF stack: 151f80 [151ff8-150ff8]
0xUNKNOWN @ ff053318:151fd8
0xFF014D3C @ ff054ef8:151fb8
0x0004D378 @ 4d64c:151f80
Magic Lantern version : Nightly.2018Jul03.500D111
Mercurial changeset : 7a3b5fa3f4c6 (unified) tip
Built on 2018-07-02 23:19:27 UTC by jenkins@nightly.
Free Memory : 238K + 2929K
When recording video the camera would crash with
ASSERT: FALSE
at SoundDevice\SoundDevice_CODEC.c:1080, task ASIF
lv:1 mode:20
ASIF stack: 151f80 [151ff8-150ff8]
0xUNKNOWN @ ff053318:151fd8
0xFF014D3C @ ff054ef8:151fb8
0x0004D378 @ 4d64c:151f80
Magic Lantern version : Nightly.2018Jul03.500D111
Mercurial changeset : 7a3b5fa3f4c6 (unified) tip
Built on 2018-07-02 23:19:27 UTC by jenkins@nightly.
Free Memory : 238K + 2929K